Analyzing Pedestrian Flows Based on Wi-Fi and Bluetooth Captures

Lorenz Schauer, Martin Werner
2015 EAI Endorsed Transactions on Ubiquitous Environments  
The rapid deployment of smartphones has led to a wide adoption of wireless communication systems such as Wi-Fi and Bluetooth. Both techniques leak information to the surroundings during operation. This information has been used in literature for estimating pedestrian flows, but the correlation to ground truth has not yet been evaluated. Thus, a reliable deployment in real world scenarios is rather difficult. To fill in this gap, we use ground truth provided by the security check process at a
more » ... eck process at a major airport and evaluate the quality of crowd information gathered from Wi-Fi and Bluetooth captures. We analyze estimated pedestrian flows and present three approaches improving the accuracy compared to a naive count of captured MAC addresses. Such counts only showed an impractical Pearson correlation of 0.53 for Bluetooth and 0.61 for Wi-Fi. The presented approaches yield a better correlation and allow for a practical estimation of pedestrian flows.
doi:10.4108/ue.1.4.e4 fatcat:kybx4d7lfzgtlbuicdtr5hrl24